荧光
化学
罗丹明
水溶液中的金属离子
滴定法
光化学
吸收(声学)
荧光光谱法
分析化学(期刊)
离子
无机化学
材料科学
色谱法
有机化学
物理
量子力学
复合材料
作者
Jingxuan Sun,Yuchuan Shao,Peng Li,Yang Yang,Chao‐Ying Gao,Jinglin Liu
标识
DOI:10.1016/j.sintl.2024.100282
摘要
Fluorescent probes play a crucial role in analytical chemistry and biological imaging, offering selective detection of metal ions. Herein, we present the synthesis and characterization of a novel rhodamine-based fluorescent probe, RbHC (Rhodamine B Helicin), which was obtained through the condensation of rhodamine B hydrazide and helicin in ethanol. The probe demonstrates remarkable selectivity and anti-interference capabilities towards Cu2+ and Fe3+ ions in 80% acetonitrile solution. Spectral titration analysis revealed a linear relationship between the intensity and the concentration of Cu2+/Fe3+. The formation of complex between Cu2+/Fe3+ and RbHC was confirmed to be 1:1, and it was further confirmed by ESI mass spectroscopy and DFT calculations. The coordination with Cu2+/Fe3+ caused the opening of RbHC's spirolactam ring, resulting in distinct color change and red fluorescence emissions. Moreover, RbHC exhibits high stability and water solubility under both acidic and neutral conditions, enabling its application in the imaging of plant tissues. Besides, the absorption intensity of RbHC–Cu2+ increased significantly when exposed to sunshine and 365 nm UV radiation, indicating that it might be used as a potential indicator for measuring outdoor UV intensity.
科研通智能强力驱动
Strongly Powered by AbleSci AI